Multiple-mode broadband wireless communication device and method

1. A multi-mode ultra broadband receiving apparatus, the apparatus comprising: a radio frequency processing unit to down-convert multiple analog signals to mid-frequencies, and the down-conversion is performed in a range where the multiple analog signals do not cause interference with each other; a parallel-to-serial converting unit to convert the down-converted parallel analog signals to a serial analog signal; an analog-to-digital converter to convert the serial analog signal to a digital signal; a mid-frequency processing unit to down-convert the digital signals to multiple baseband signals; and a baseband receiving unit to receive the down-converted multiple baseband signals.

2. A multimode ultra broadband transceiving apparatus, the apparatus comprising: a mid-frequency processing unit to up-convert multiple parallel digital signals existing in a baseband to mid-frequencies, and the up-conversion is performed in a range where the multiple parallel digital signals do not cause interference with each other; a first parallel-to-serial converter to up-convert, to a serial digital signal, the up-converted parallel digital signals that are up-converted to the mid-frequencies; a digital-to-analog converter to convert the serial digital signal to an analog signal; a first radio frequency processing unit to up-convert the analog signal to multiple transmission frequencies respectively corresponding to desired communication services; a transmission and reception signal separating unit to separate the up-converted analog signal that is up-converted to the multiple transmission frequencies and multiple analog signals received from an outside; a second radio frequency processing unit to down-convert the multiple analog signals received from the outside in a range where the multiple analog signals do not cause interference with each other; a second parallel-to-serial converter to convert the down-converted parallel analog signals to a serial analog signal; and an analog-to-digital converter to convert the serial analog signal to a digital signal, wherein the mid-frequency processing unit up-converts each of the multiple parallel digital signals so that each of the up-converted signals have a guard band.

3. The apparatus of claim 2 , wherein the transmission and reception signal separating unit separates the up-converted analog signal that is up-converted to the multiple transmission frequencies and the multiple analog signals received from outside, based on a half duplex (HD) communication or a full duplex (FD) communication.

4. A multi-mode ultra broadband receiving method, the method comprising: down-converting multiple analog signals to mid-frequencies, and the down-conversion is performed in a range where the multiple analog signals do not cause interference with each other; converting the down-converted parallel analog signals to a serial analog signal; converting the serial analog signal to a digital signal; down-converting the digital signal to multiple baseband signals; and receiving the down-converted multiple baseband signals.